Background gvfs restart to avoid blocking user.slice thaw

The post-sleep hook runs before systemd thaws user.slice, so a
synchronous systemctl --user restart hangs for ~90 seconds waiting
for the frozen user manager to respond — blocking the entire resume.

Background the restart with a short delay so it executes after
user.slice is thawed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

default/systemd/system-sleep/unmount-fuse

@@ -14,6 +14,10 @@ if [[ $1 == "pre" ]]; then
 fi
 
 if [[ $1 == "post" ]]; then
+  # Run in background — user.slice is still frozen at this point, so a
+  # synchronous restart would block the thaw for up to 90 seconds.
+  (
+    sleep 5
     for uid_dir in /run/user/*; do
       uid=$(basename "$uid_dir")
       if [[ -S $uid_dir/bus ]]; then
@@ -23,4 +27,5 @@ if [[ $1 == "post" ]]; then
           systemctl --user restart gvfs-daemon.service 2>/dev/null || true
       fi
     done
+  ) &
 fi